Which of the following is the correct match f | vedclass

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(D) $1$. $CuFeS_2$ (Copper pyrites) is concentrated by froth flotation,not leaching.$2$. $Au$ (Gold) is purified by zone refining or electrolytic refi

Vedclass · Accepted Answer

$PbS - 	ext{Reduction} - 	ext{Self reduction}$

Vedclass · Answer

(D) $1$. $CuFeS_2$ (Copper pyrites) is concentrated by froth flotation,not leaching.$2$. $Au$ (Gold) is purified by zone refining or electrolytic refining,not polling.$3$. $Fe_2O_3$ (Hematite) is reduced by carbon (smelting) in a blast furnace,not electrolysis.$4$. $PbS$ (Galena) is extracted by roasting to form $PbO$,which then reacts with remaining $PbS$ to produce lead metal. This process is known as self-reduction or auto-reduction. Thus,$PbS - 	ext{Reduction} - 	ext{Self reduction}$ is the correct match.

Which of the following is the correct match for $Ore - Process - Method$?

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